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dong fang hong -75 tuo la ji ji you ya li wei he chu xian fan chang
Author(s): 
Pages: 25
Year: Issue:  7
Journal: Farm Machinery

Keyword:  机油压力回油阀球阀弯曲状态友谊农场导向套;
Abstract: <正> 一台东方红-75拖拉机的机油压力反常.即转速低时,油压高,而转速高时,油压低。经检查回油阀,发现回油阀弹簧半面发亮,说明该弹簧在装配时发生弯曲,导致转速低时,弹簧螺旋弹力正常,故压力较高。当转速高时,回油量大,使球阀开启量大,弹簧由于螺旋压力而变成弯曲状态,故大油门高转速时弹力反而小,表现出油压低。这种现象普遍存在于东方红-75上。改善办法是在调整销钉与弹簧之间加上一
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